| Year | Value | | 2022 | 4,036 | | 2021 | 3,890 | | 2020 | 3,739 | | 2019 | 3,588 | | 2018 | 3,443 | | 2017 | 3,296 | | 2016 | 3,141 | | 2015 | 2,982 | | 2014 | 2,827 | | 2013 | 2,679 | | 2012 | 2,546 | | 2011 | 2,437 | | 2010 | 2,354 | | 2009 | 2,276 | | 2008 | 2,206 | | 2007 | 2,154 | | 2006 | 2,101 | | 2005 | 2,036 | | 2004 | 1,966 | | 2003 | 1,896 | | 2002 | 1,830 | | 2001 | 1,781 | | 2000 | 1,742 | | 1999 | 1,699 | | 1998 | 1,650 | | 1997 | 1,599 | | 1996 | 1,554 | | 1995 | 1,523 | | 1994 | 1,505 | | 1993 | 1,486 | | 1992 | 1,457 | | 1991 | 1,411 | | 1990 | 1,354 | | 1989 | 1,307 | | 1988 | 1,271 | | 1987 | 1,238 | | 1986 | 1,202 | | 1985 | 1,166 | | 1984 | 1,135 | | 1983 | 1,119 | | 1982 | 1,119 | | 1981 | 1,126 | | 1980 | 1,131 | | 1979 | 1,132 | | 1978 | 1,129 | | 1977 | 1,119 | | 1976 | 1,100 | | 1975 | 1,079 | | 1974 | 1,062 | | 1973 | 1,045 | | 1972 | 1,028 | | 1971 | 1,015 | | 1970 | 998 | | 1969 | 978 | | 1968 | 958 | | 1967 | 934 | | 1966 | 904 | | 1965 | 871 | | 1964 | 841 | | 1963 | 812 | | 1962 | 786 | | 1961 | 764 | | 1960 | 744 |
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